Codon 54 polymorphism of the fatty acid binding protein (FABP) 2 gene is associated with increased cardiovascular risk in the dyslipidemic diabetic participants of the veterans affairs HDL intervention trial (VA-HIT)

Angeliki Georgopoulos, Hanna Bloomfield, Dorothea Collins, Margaret E. Brousseau, Jose M. Ordovas, John J. O'Connor, Sander J. Robins, Ernest J. Schaefer

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The threonine (Thr) for alanine (Ala) codon 54 polymorphism of the fatty acid binding protein (FABP) 2 gene, when compared to the wild type, is associated with dyslipidemia. Since dyslipidemia is common in diabetes and is associated with increased cardiovascular risk, we tested the hypothesis that Thr-54 is associated with increased cardiovascular risk in patients with diabetes. The secondary prevention veterans affairs HDL intervention trial (VA-HIT) was carried out in patients with dyslipidemia. The DNA of trial participants (n = 776) was screened for the Thr-54 polymorphism and cardiovascular endpoints were monitored. The polymorphism was detected in 370 (47.7%). For first occurrence of the primary endpoint [myocardial infarction (MI) or coronary heart disease (CHD) death] the hazard ratio (HR) and confidence intervals (Cox proportional hazards model) was 2.5 (1.2, 5.3) p = .02 in diabetic carriers of Thr-54 versus carriers without diabetes or fasting glucose >7 mmol/L. For the expanded endpoint (stroke, MI or CHD death), the corresponding HR was 3.0 (1.4, 5.4) p = .0003 and for the stroke alone the corresponding HR was 3.5 (1.4-8.9) p = .01. The higher cumulative incidence of the expanded endpoint in diabetic participants carrying the FABP2 polymorphism versus non-diabetic carriers was consistently present throughout the 5 years of the study (p = .0002). We conclude that based on the VA-HIT data, the Thr-54 polymorphism of the FABP2 gene is associated with a 2-3.5-fold increase in cardiovascular risk in dyslipidemic men with diabetes compared to their non-diabetic counterparts.

Original languageEnglish (US)
Pages (from-to)169-174
Number of pages6
JournalAtherosclerosis
Volume194
Issue number1
DOIs
StatePublished - Sep 1 2007

Keywords

  • Cardiovascular risk
  • Diabetes
  • FABP2
  • Polymorphisms

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